Image to Base64 Converter

Convert any image to a Base64 data URI. Drag and drop or click to upload. Works with PNG, JPG, GIF, SVG, and WebP formats.

Last Updated: September 2026
100% Client-Side — Your data never leaves your device

Drop an image here, or click to browse

Supports PNG, JPG, GIF, SVG, WebP

Max 50MB

Why this tool is safe

Your data never leaves your device — everything runs in your browser.

No server uploads. Other tools send your files to their servers. Ours don't.
Zero tracking of content. We never see, store, or log anything you convert.
Works offline. Once loaded, the tool works without an internet connection.
No account required. Instantly use all tools completely free without signing up.

Image to Base64 in Code

Convert images to Base64 data URIs programmatically.

JavaScript
// Browser: Convert File to Base64 data URI
function fileToBase64(file: File): Promise<string> {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = () => resolve(reader.result as string);
    reader.onerror = reject;
    reader.readAsDataURL(file);
  });
}

// Node.js: Convert image file to Base64
import { readFileSync } from "fs";
const base64 = readFileSync("image.png").toString("base64");
const dataUri = `data:image/png;base64,${base64}`;

Why Convert Images to Base64?

Converting images to Base64 allows you to embed them directly into your HTML, CSS, or JavaScript files as Data URIs. This eliminates the need for the browser to make separate HTTP requests to load the images.

Our Image to Base64 tool performs this conversion entirely in your browser, ensuring maximum privacy and speed.

Pros and Cons of Base64 Images

  • Pro: Reduces the number of HTTP requests, potentially speeding up initial page load.
  • Pro: Perfect for small icons, placeholders, or single-file HTML documents.
  • Con: Base64 strings are roughly 33% larger than the original binary image file.
  • Con: Embedded images cannot be cached independently by the browser.

Frequently Asked Questions

Search below or browse through our most commonly asked questions.

Drag and drop an image onto the upload area, or click to browse and select a file. The tool will instantly generate a Base64 data URI that you can copy and use in HTML, CSS, or JavaScript.
We support all common image formats: PNG, JPG/JPEG, GIF, SVG, WebP, and BMP. The MIME type is automatically detected from the file.
Since the conversion runs entirely in your browser, the limit depends on your device's memory. Typically, images up to 50MB work fine, but generating very large text strings can slow down the browser.

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